What are the advantages and disadvantages of sustainable forestry?

A disadvantage of cutting down a tree is that trees supply our air with oxygen. Cutting down trees does reduce the oxygen level in our atmosphere; only one would not greatly impact anything though. We live on the oxygen that is in your atmosphere but trees are not the only supplier of that. There are several other contributers but I am not fully aware with how much they help out.

Some advantages of cutting down trees is more space to build, supplies for housing and the furniture inside of it, and much more.